Primordial Black Hole Formation from Inflaton [PDF]
International Journal of Modern Physics D, 1999 Measurements of the distances to SNe Ia have produced strong evidence that the Universe is really accelarating, implying the existence of a nearly uniform component of dark energy with the simplest explanation as a cosmological constant.
BIN WANG +10 more
core +6 more sources
Primordial black hole superradiance and evaporation in the string axiverse [PDF]
Journal of High Energy Physics, 2023 In the string axiverse scenario, light primordial black holes may spin up due to the Hawking emission of a large number of light (sub-MeV) axions. We show that this may trigger superradiant instabilities associated with a heavier axion during the black ...
Marco Calzà +2 more
doaj +2 more sources
The Basics of Primordial Black Hole Formation and Abundance Estimation [PDF]
Galaxies, 2022 This paper is a biased review of the primordial black hole (PBH) formation and abundance estimation. We first review the three-zone model for PBH formation to help an intuitive understanding of the PBH formation process. Then, for more accurate analyses,
Chul-Moon Yoo
doaj +2 more sources
The dark universe: Primordial black hole ⇋ dark graviton gas connection [PDF]
Physics Letters B, 2023 We study the possible correspondence between 5-dimensional primordial black holes and massive 5-dimensional KK gravitons as dark matter candidate within the recently proposed dark dimension scenario that addresses the cosmological hierarchy problem ...
Luis A. Anchordoqui +2 more
doaj +2 more sources
Primordial black-hole dark matter via warm natural inflation [PDF]
Physics Letters B, 2022 We report on a study of the natural warm inflationary paradigm (WNI). We show two important new results arise in this model. One is that the observational constraints on the primordial power spectrum from the cosmic microwave background (CMB) can be ...
Miguel Correa +3 more
doaj +2 more sources
A topic review on probing primordial black hole dark matter with scalar induced gravitational waves. [PDF]
iScience, 2021 Yuan C, Huang QG.
europepmc +3 more sources
Gravitational waves induced from primordial black hole fluctuations: the effect of an extended mass function [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 The gravitational potential of initially Poisson distributed primordial black holes (PBH) can induce a stochastic gravitational-wave background (SGWB) at second order in cosmological perturbation theory. This SGWB was previously studied in the context of
T. Papanikolaou
semanticscholar +1 more source
Planck constraints and gravitational wave forecasts for primordial black hole dark matter seeded by multifield inflation [PDF]
Physical Review D, 2023 We perform a Markov Chain Monte Carlo (MCMC) analysis of a simple yet generic multifield inflation model characterized by two scalar fields coupled to each other and nonminimally coupled to gravity, fit to Planck 2018 cosmic microwave background (CMB ...
Wenzer Qin +4 more
semanticscholar +1 more source
Constraining Primordial Black Hole Formation from Single-Field Inflation. [PDF]
Physical Review Letters, 2022 The most widely studied formation mechanism of a primordial black hole is collapse of large-amplitude perturbation on small scales generated in single-field inflation.
J. Kristiano, J. Yokoyama
semanticscholar +1 more source
How well do we know the primordial black hole abundance: The crucial role of nonlinearities when approaching the horizon [PDF]
Physical Review D, 2023 We discuss the non-linear corrections entering in the calculation of the primordial black hole abundance from the non-linear radiation transfer function and the determination of the true physical horizon crossing.
V. De Luca, A. Kehagias, A. Riotto
semanticscholar +1 more source